Clasp



Oct. 1, 1929 s. o. iVlYRBERG.

CLASP Filed Aug. 20, 1927 JNVENTOR.

116 ATTORNEYS Patented Oct 1, 1929 I I I g UNITED STATES PATENT OFFICE SVEN o. MYRBERG, or EAST, PROVIDENCE, nHonE ISLAND, ASSIGNOR TO PROVIDENCE srocx COMPANY, or PROVIDENCE, EHon ISLAND, A CORPORATION or RHODE ISLAND CLASP Application filed August 20, 1927. Serial No. 214,262.

This invention relates to a clasp for debracelet from that shown in Fig. 1 and adtachably connecting link units together or acent the end'hook of the bracelet. for detachably connecting a series of link 1g. 10 is a perspective view of the units to the bails of a wrist watch or the sprlng for moving the clasp to open position.

5 like; and has for its object to provide a clasp It is found desirable in watch bracelets to 55 which may be easily and quickly released and proylde a clasp intermediate the watch enunhooked to detachably connect different gaging ends of a bracelet, which may be parts together, the clasp being so formed that quickly and easily detached for removing wher desired it may have the same general the watch irom the wrist of the wearer, and

appearance as links to which it is attached. 1n order to provide a simple and a p ac c 60 A f th bj t f th i v ti n is to construction for this purpose, I have hinged provide two hingedly connected members, together two-generally box-shaped members one member being formed with a hook and In such a way that a hook formed on on the other of said members closing the openof the members is closed by the other memi t id h k b i i n it hinge her and accidental detachment of the clasp 5 ti from the part onto Which it is hooked is pre- A till f th bj f, f th i tion i vented, the members, however, when released to provide a body having a hook with a are swung by a spring on their hinge conmember hinged at one end to. said body to ncction to permlt sald clasp to be unhooked close the hook, each of said members having fl'qn ahnk of the bracelet or the part to 70 id all f i ti ll a i t tai which it 1s connected, as desired. I have th members i l d iti i 7 also found that this construction'may be used With th d th bj t i i th to advantage not only at a point intermediate invent-ion consists of certain novel features h nds of the bracelet but also for th end 25. of construction, as will be more fully deh k Ofthe bracelet-or in the link unit adja- 75 ib d, d ti l l i t d t, i th cent ,to the end hook to permit end hooks of d d hi varying widths to be secured to the watch I th accompanying d i bracelet end to accommodate wrist watches Fig. 1 is a perspective view of a series of hav ng balls of varlouswidths; and the fol 1i k connected t th b clasp hi h lowing 1s a detailed description of the pres- 0 is shown partly open. ent embodiment of this invention showing Fi 2 i a perspective i f th closure one construction by which these advantageous member f th clasp results may be accomplished.

Fi 3 is a perspective view of the body With reference to the drawings, 10 desigmem f th l nates a series or link units which are yield- 5 Fig. 4 is a central se tional View of the lngly connected together by slide links 11. two members ofthe clasp in closed position. Each unit of the construction illustrated has Fig. 5 is a central sectional view of the a cross-bar 13 at one end and a cross-bar 14 closure member swung partly open from the at its opposite end. The clasp which'I have body member of the clasp. constructed for connecting theselink units Fig. 6-is a section on line 6-6 of Fig. 4-. together has a body member 15 having side Fig. 7 is a perspective View of the clasp walls 16 forming a generally channel-shaped formed with an elongated hook for engagconstructioniwith one end 17 extended and ing the bails of a wrist watch. formed into ahook adapted to detachably 45 Fig. 8 is a central sectional view of the engage the'barle and the opposite end 18 clasp shown in Fig. 8 with the closure memextended to form a tongue which is folded her in position. about the cross-bar 13 of one of the link Fig. 9 is a top plan view of the end porunits, as clearly shown in Figs. 4 and 5, to tion of a watch bracelet showing the clasp connect the body member thereto. -A closure 50 in a position different in relation to the member 19, illustrated in bottom perspective in Fig. 2, is hingedly connected to the body member by means of a pivot 33 passing through the resilient side Walls 20 and 16 oi the members. The resilient side walls 20 of the closure member frictionally engage the outer surface of the resilient walls 16 of the body member. Each of the sidewalls 20 has its edges rolled as at 21 to snap over detents 22 extending outwardly from the side walls 16 which holds the closure member 19 in position against the opening pressure of the V spring 34 to close the opening to the hook 17, as clearly illustrated in Fig. 4. The spring 34 is formed with an eye which is mounted on the pivot pin 33 between the members. The inturned portions 40 on the closure member 19 extend within the rolled tongue 30 to limit the opening of the member. A cross bar 23 extends between the side walls 20 and prevents the cross-bar 1 1 of the unit to which the hook 17 is attached from moving beneath the closure or from beneath the hook when the clasp is in closed position. The finger lip 24 is raised from the top 25 of the clasp to permit of ready access of the thumb nail for lifting the closure member over the detents to permit the spring 34 to swing it on. the pivot 33 to the limited position shown in Fig. 5 from which position it may be readily closed.

The illustration in Fig. 1 portrays the clasp as a so-called center catch about midway between the ends of a watch bracelet.

However, an end hook may be easily formed involving substantially the same construetion as above mentioned by forming the hook illustrated at 27 in Fig. 7, of a more extended width, to be used for hooking into the bail 28 of the wrist watch 29 to attach the series of connected link units thereto, the closure member 30 being similarly formed and hinged on the tongue 31, as heretofore described.

It is known that various wrist watches have bails ot varyingsizes and in order to provide for easy exchange of end hooks I may use my clasp in the position illustrated at 32 in Fig. 9 adjacent the end hook to per mit of quick exchange of different sized hooks to lit watches having bails of varying widths.

It will be seen that I have provided a construction which may be used in various places where a quickly detachable clasp is required, the construction being very simple and yet practical in its operation and one which is readily adapted to be so constructed that it may conform to bracelets of varying characters where it is desirable to preserve the same general appearance as other links in the series with which it is associated.

lhe foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:

1. A clasp for parts to be detachably connected comprising a channel shaped body member and a closure member hinged together, a fixed hook atone end of said body member for detachably engaging a cross-bar or the like on one of the partslto'which it may be connected and a sheet metal tongue on the opposite end of said body member for permanentlyattaching it to the other of the parts to be connected, and a cross piece secured between the sides of said, closure member at the free end thereof, said closure member being positioned to swlng and close said hook and be held in closed position by r'riction engagement of the side walls of the two members, the cross piece resisting movement of the engaged cross bar or the like beneath the hook.

2. A clasp for link units comprising a channelshaped body member having one end formed into a detachable hook and its other end extended to form a tongue for folding about a link to which it is to be permanently connected, a channel shaped closure member, a pivot pin for hingedly mounting said closure member on said body member to close said hook and prevent detachment of the part engaging the same, a spring mounted on said pivot pin and having arms bearing against the said members for moving said members to open position, and means forretaining said members in closed position.

3. A clasp for link units comprising a body member having one end formed into a detachable hook and its other end extended to form a tongue for folding about a link'to which it is to be permanently connected, a closure" member to close said hook and prevent detachment of the part engaging the same, side walls on eachof said members to frictionally engage and nest one within the other, a pivot pin extending through said side walls to hingedly connect said members, a spring mounted on said pivot pin for moving said members to open position, detents on the walls of one of said members, and rolled portions on the side walls of the other of said members to snap over said detents to retain the members in closed position against the action of said spring.

1. A clasp for link units comprising a body member having one end formed into a detachable hook and its other end extended to form a tongue for folding about a link to which it is to be permanently connected, a closure member, a pivot pin for hingedly mounting said closure member on said body member to close said hook and prevent detachment of the part engaging the same, and a spring mounted on said pivot pin and engaging one of said members for moving it to open position, and means associated with said members for limiting the opening swinging movement between them on the pivot pin under action of the spring.

5. A clasp for link units having cross-bars at each end comprising a pair of sheet metal channel-shaped members pivoted together and adapted to have their side walls frictionally engage, one of said members having the sheet metal of its bottom wall extended to form a tongue encircling the cross-bar of one of the said link units for permanently securing the clasp thereto and a hook on its opposite end for engaging the cross-bar of another link unit for detachably securin the clasp thereto, and means on the end oi the other of said members for enclosing the said book.

6. A clasp for link units having cross-bars at each end comprising a sheet metal channelshaped body box member having the bottom wall at one of its ends extended and formed into a tongue for encircling the cross-bar of one of the said link units and its opposite end extended and formed into a hook for engaging the cross-bar of another link unit, a channel-shaped closure member pivotally mounted on the said body member with the side walls of the members frictionally engaging, and means formed on the end of said closure member for closing the said hook.

In testimony whereof I afl'ix my signature.

SVEN O. MYRBERG. 

